Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.703755
Title: Studies in the chemistry of diaryls
Author: Loh, Shiu May
Awarding Body: University of London
Current Institution: Royal Holloway, University of London
Date of Award: 1955
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Abstract:
The thesis is divided into three sections: (I) The thermal decomposition of some "diazoperbromides". The bis-diazoperbromide derived from 2-nitrobenzidinedecomposes in hot glacial acetic acid to give 2:4:4'-tribromo-and 4:4'-dibromo-2-nitrodiphenyl, The tribromo-compound appears to be formed by an intramolecular mechanism.(II) The unsuccessful attempts of preparing both 4:5-dimethyl-and 4:5:9-trimethyl-phenanthridine could be due to the steric effects of the methyl groups in the blocking positions. 2-Amino-6:6'-ditolyl (+)-camphor-10-sulphonate showed mutarotation and yielded an inactive base on decomposition. Attempts were made to resolve 6-(methylphenyl)-phenyl-6 '-methyl-2-trimethylammonium iodide, but., in each case an inactive iodide was obtained after decomposition of the active salt. (Ill) 5: 5'-Dilsoquinolyl (+ )-camphor-10-sulphonate could not be resolved, neither did it mutarotate; although its (+)-tartrate showed mutarotation in one occasion, there was no confirmed evidence of mutarotation of the tartrate; but comparison with similar salt of inactive base (2:2'-dipyridyl) gave an Indication that the base might be capable of optical activity.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.703755  DOI: Not available
Keywords: Organic Chemistry
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